Pump construction.



C. 0. LUCAS.

PUMP CONSTRUCTION.

APPLICATION FILED JAN.31,1912.

Patented Sept. 24, 1912.

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CHARLES O. LUCAS, OF DAYTON, OHIO.

PUMP coNsTRUcTroN.

To all 'whom it may concern Be it known that I, CHARLES O. LUCAS. acitizen of the United States, residing at Dayton, in the county ofMontgomery and State of Ohio, have invented certain new and usefulImprovements in Pump Construction; and I do declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it app'ertains to make and usethe same, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful limprovements in pumpconstruction, and repumps having a multiplicity of cylinder andeliminates connections and joints, and to a corresponding extentincreases efliciency and decreases cost of labor in construction andassembling.

Referring to the annexed drawings, Figure l is a top plan view of myimproved pump base, the upper portion of which is a section taken on theline a-a of Fig. 3, and the intermediate portion of which is a sectionon the line b-b of Fig. 3, and the lower portion of which is a sectionon the line c-c of Fig. 3; Fig. 2 is a sect-ion on the line cil-Z ofFig. 3; Fig. 3 is a section on the line e-e of Fig. 1; and Fig. 4 is asection on the line f-f' of Fig. 1.

Referring more particularly to the drawings, 1 represents the baseplate. From the central portion of this base plate extends a verticalwall 2 integral therewith. Integral with said wall 2 is also a series ofvertically disposed cylinders 3 provided with glands 5, and receivingplungers 6. On one side of the wall 2 and near the base thereof, is anelongated inlet chamber 7 having an inlet opening 8, and along the otherside of said wall and above the chamber 7 is an exhaust chamber 9provided with an outlet10. The chambers 7 and 9 lie within the confinesof Specification of Letters Patent.

Application filed January 31, 1912.

Patented Sept. 24, 1912.

Serial No. 674,561.

the base and are inclosed by outer integral walls 7 and 9. Adjacent tothe cylindrical parts 3, the chambers 7 and 9 extend out and around thesaid cylinders. Opposite each of the cylinders, and on outer sidesthereof, are apertured bosses 13 providing ports and to which inlet andexhaust valve housings 14 and 15 are attached. The said inlet andexhaust valve housings lie close to the base and are identical inconstruction and therefore interchangeable; they are constructed asfollows. The said housings are provided with lower chambers 16 and upperchambers 17 separated by decks 18. The decks 18 are provided with valveopenings 1.9 controlled by valves 20, which may be removed to openingsclosed by caps 21. The lower chambers 16 of the inlet valve housings 14communicate with the elongated inlet chamber 7 at the curved ordeflected portions 'l1 through ports 22, and the upper chambers 17 ofthe housings 14 communicate with the cylinders 3 through horizontalports 23. The lower chambers 1G of the exhaust valve housings 15communicate with the cylinders 3 through horizontal ports 24. The ports23 and 24 are in alinement and lie between the inlet and exhaustchambers 7 and 9. The upper chambers 17 of the housings 15 communicatewith the exhaust chambers 12 through the ports 25. The distances betweenthe ports 22 and 23, and the ports 24 and 25 are the same; this permitsthe inlet and exhaust valve housings to be interchangeable and of thesame construction, which greatly facilitates construction andassembling. The advantages are primarily of a structural character whichcombine with efficiency which is due largely to a compactness and aclose and direct communication between the chambers or passages and thevalve ports.

I claim:

A pump casing having a central vertical wall, integral cylindrical wallsproviding chambers, the axes of which are within the plane of saidcentral vertical wall, inlet and exhaust chambers lying adjacent to andon opposite sides of said central wall and deflected around thecircumferences of the cylindrical walls and inclosed by outer integralWalls parallel with said central Wall, In testimony whereof I aiX mysignature, the portions of said chambers deflected in presence of twoWitnesses. around the cylindrical Walls being provided With inlet andexhaust ports, and Valve `CHARLES O' LUCAS' housings mounted on eachside of said base Witnesses:

and communicating With said ports and R. J. MGCARTY,

chambers. MATTHEW SIEBLER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, '.D. C.

